plepe/pgmapcss — pull request #23 by plepe (2014-06-30 06:21:32+00:00)
Title: @media queries: css3 conformity

"not" is a prefix for a media query part, but can not be used for single elements. Therefore it's not valid to do `@media (user-agent: pgmapcss) and not (min-pgmapcss-version: 0.8)`.